Cited by 102Autism Spectrum Disorder ResearchTryptophan and brain disordersChild Nutrition and Feeding Issues

Increased IgG4 levels in children with autism disorder

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Enstrom, Amanda, Krakowiak, Paula, Onore, Charity, Pessah, Isaac N., Hertz-Picciotto, Irva, Hansen, Robin L., Van de Water, Judy A., Ashwood, Paul·2009·Brain, Behavior, and Immunity

Abstract

Accumulating evidence indicates that immune dysfunction is associated with autism disorders in a significant subset of children. Previous reports have shown abnormal immunoglobulin (Ig) levels, including an increased presence of autoreactive antibodies in the circulation of individuals with autism. As IgG is the predominant antibody isotype in circulation, we expected that an altered immune response could result in an abnormal IgG subclass profile in children with autism. We examined circulating plasma levels of IgG1, IgG2, IgG3, and IgG4 in 241 children from the CHARGE (Childhood Autism Risks from Genetics and the Environment) study, a large epidemiologic case-control investigation, including 114 children who meet full criteria for autism disorder (AU), 96 typically developing control children (TD) from a randomly selected sample of the general population, and 31 children with developmental delays (DD). We report significantly increased levels of the IgG4 subclass in children with AU compared with TD control children (p=0.016) and compared with DD controls (p=0.041). These results may suggest an underlying immunological abnormality in AU subjects resulting in elevated IgG4 production. Further investigation is necessary to elucidate the relationship between immunological findings and behavioral impairments in autism.

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Crossref · 10.1016/j.bbi.2008.12.005

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  • Elevated plasma cytokine levels (IL-1β, IL-6, IL-12p40, TNFα), altered immunoglobulin levels, elevated complement proteins, and increased chemokine levels (CCL2, CCL5, CCL11) are reported in the plasma of young children with autistic disorder compared with matched typically developing children.

    “Elevated plasma cytokine levels (IL-1β, IL-6, IL-12p40 and TNFα) [82–84], altered immunoglobulin levels [85, 86], elevated levels of complement proteins [87], and increased chemokine levels (CCL2, CCL5 and CCL11) [88] are reported in the plasma of young children with AD compared with matched typically developing children.”

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Authors
Enstrom, A., Krakowiak, P., Onore, C., Pessah, I. N., Hertz-Picciotto, I., Hansen, R. L., Van de Water, J. A., & Ashwood, P.
Affiliations
University of California, Davis (US)
Corresponding author
Ashwood, Paul
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2009-03
Volume
23
Issue
3
Pages
389-395
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2042013685
Cited by
101
References
64
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 7 · 2019: 3 · 2018: 6 · 2017: 3 · 2016: 9 · 2015: 5 · 2014: 5 · 2013: 4 · 2012: 15
FWCI
4.59
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Environmental Protection Agency
  • Emch Foundation
  • University of California, Davis
  • National Institute of Environmental Health Sciences (R01ES015359, P01ES011269)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
Keywords
autism spectrum disorder, IgG4, IgG subclasses, immune dysfunction, children, developmental delay, CHARGE study, autoantibodies
MeSH terms
Analysis of Variance, Autistic Disorder, Developmental Disabilities, Child, Preschool, Female, Humans, Immunoglobulin G, Male, Case-Control Studies

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